Fire-extinguisher.



1. STANZIG R. KNIG.

FIRE EXTINGUiSHER.

APPLICATION FILED AUG13y 1914.

,235,55 Patented my 31,1917.

1 ED STATES ATENT orriicn.

JOHANN STANZIG AND RUDOLF KNIG, OF VIENNA, ASTRIA, ASSIGNORS OF ONIEl-THIRD T JOSEF ROSENTHAL, 0F VIENNA,

AUSTRIA.

FIRE-EXTINGUISHEB.

Application led August `13,

To all wom t may concern:

Be it known that JOHANN STANZIG and RUDOLF KNIG, subjects of theNEmperor of Austria, residing at Vienna, VI, in the Empire of Austria,have invented certain new and useful Improvements in Fire-Extinguishers,of which the following is a specifcation, reference being had therein tothe accompanying drawing.

It has been previously known to extinguishburning liquids, such asbenzin and the like by means of two fluids kept apart from each otherready for use and when mixed evolving gas and foam, the gas beingmechanically bound in the foam and the latter thereby rendered more fireresisting. rIhe action of the foam is to cover the burning object-s andstifle the flames.

In the known devices the fluids always kept ready for use however takeup too much room and are also liable to freeze. To remedy this defect ithas hitherto been proposed to employ reagents in solid form and notdissolve same until required. Hence in thisvknown method, the waterdissolves all the reagents simultaneously and the same formone mixturein which the whole of one reagent acts simultaneously upon the whole ofthe second reagent which, as practice has proved, results in anincomplete utilization of the reagents. l

In view of this fact re extinguishing devices have been constructed inwhich the solution has been produced by passing water under pressurethrough the reagents kept in solid form.

In these appliances the water under pressure is however so conducted,that it passes through the separated reagents in two streams and thatthe reaction forming the foam, will not take place until the two streamsmeet.

To fully utilize the reagents this arrange- `ment however makes itnecessary that the reagents contained in the two solutions meeting,correspond exactly with the combining proportions and as this conditionis practically not fulllable, these apparatus do by a long way also notgive the maximum effect.

To obtain the described result in a reliable manner, according to ourinvention, the chambers containing the reagents are inserted in thestream of water under pressure one behind the other so that the streamof water carrying one of the reagents in solution, 'a

Specification ofLetters Patent.

' and Patented July 31, 1917. 1914. serial No. 856,512. v

after passing through the irst chamber will enter the second chamber andact therein upon the second reagent in quantity corresponding exactlywith the combining proportions. The commencement of the` reaction andthe formation of foam is substantially assisted by so choosing therelative position of the place where the water stream carrying the firstreagent enters the second chamber to that of the exit, that the streamof water can only leave the second chamber after reversing its directionof flow.

The annexed drawing shows in section one' embodiment of the deviceconstructed in accordance with our invention for carrying out our saidmethod. f

The said device consists of a vessel o, preferably made of metal andtubular, closed at both. ends and by a partition divided into a smallchamber mI anda large chamber n. The chamber m is furnished with aclosable inlet f and a pipe connection el while the chamber n has aclosable inlet a and an outlet h preferablyf coaxial with the vessel lv,communicating with the first chamber 'm by means of a pipe 0 whichextends along the wall ofthe" vessel to the end of the chamber n and isbent at its end to an angle of 180 degrees, so that the stream of waterissuing at the pipe orifice is directed against the interior of thechamber n and must pass through the latter in two directions to reachthe out et pi e connection it. y

The cham erm for instance,

the like in powder form, the chamber n with a mixture of pulverizedbicarbonate of soda, quillai bark and a saponaceous or another substanceforming foam, in some cases charged with ammonia or. alum.

The device in this condition ready for use, can be kept any desiredlength oi7 time and in any desired place, in any temperature and 1n anyposition, without detriment to its effectiveness.

Owing to the small weight,y and size of the device, when required it canbe readily brought to and connected with the outlet of'a water conduitintended therefor. In a permanentinstallation such connection is madewhen putting up the installation, so that fa tap only has to be openedto set the same in operation. The water then flowsv through the chamberm gradually dissolves the acid' therein, enters through the pipe odissolving the saine. 'lhe acid in the Watei then reacts on Jchedissolving salts and ai, Jehe saine time extiacts the quillai bai-k, sothat "die gases iioinied by the action of the acid will form with theslim;T duid athick ioani which is conducted by the pipe connectien tothe place of lire with or Without pressuie either direct or bv means ofa hose. The disk ii in the chamber n serves as deecing surfaces andassists the formation of a uniomnly thick ioain. f

Having now paiticula-rlv deseibed and ascertained the nauie ci oui' saidinvenion and in whatAv manner the saine is io beperformed, We declaiethai what We claim is: l., fi device :foin the production of foamcompi'ising e vessel, a tiansveise paiition having an opening anddividing said vessel into chambers of unequal size', an inlei: inte thesmaller of said chambers, an ouilei; ei- `theopposite end of the vessel,a pipe having one end engaged in the opening ini said paibitien andextending toward Jehe outlet loi said vessel, eransveise baille invessel, said pipe bey-end seid p neeeeeqa baide and cuived to open intolarge? ei .said {mvo chambers, thi'ougli said bae..

equal size, a pipe connecting said chambers,

and a baiile'neei the outlet end oii said vessel, said pipe having abackward curve of 180 near iis outlet end and extending thiongh saidbaniie, said eutletport being ai the end oi said vessel opposite to itsinlet end. Y

3. A device of the character described,

comprising a vessel having an inlet and en outlet opposite the inlet, apaiiion dis-l posed tiansvei'sely oi said vessel and dividing the saine'into ehainbeis of unequal size, a bafle disposed eo'ncenticallv Withinehe vessel -adjaeent *bhe outlet end thei'eof, and a pipe connectingsaid chambers and extendving ihelengh of the largest of the laciei andcuiving backward throughv said baiiie.

ln'iesiinony whereof We aix our signa- 'iuies in the presence oi` tvvoWi'enesses.

JOHANN S'lNZlG. 'ennemi inline.

l/i/'iiA ess-es :r

lnimnicn Binnen, linens@ Fneenn,

